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Consider the following statements regarding a conductor and free space boundary: 1. No charge and no electric field can exist at any point within the interior of a conductor 2. The charge may appear on the surface of a conductor. Which of the above statements are correct?  

Consider the following statements regarding a conductor and free space boundary: 1. No charge and no electric field can exist at any point within the interior of a conductor 2. The charge may appear on the surface of a conductor. Which of the above statements are correct?   Correct Answer Both 1 and 2 

Properties of conductor:

  • The electric and magnetic field (i.e. net field) inside the conductor is zero.
  • The net charge density inside the conductor is zero and any net charge is present on the surface of the conductor only.
  • An ideal conductor always has an equipotential surface.
  • Outside the conductor, there is a field present.

 

This is explained with the help of the following diagram:

[ alt="F1 Jitendra Madhu 26.08.20 D5" src="//storage.googleapis.com/tb-img/production/20/08/F1_Jitendra_Madhu_26.08.20_D5.png" style="width: 242px; height: 197px;">

Observations:

1) The electrostatic field lines are normal to the surface at every point at the surface of a charged conductor.

2) The electrostatic field is zero inside a conductor.

3) In a static situation, the interior of the conductor contains no excess charge.

4) The electrostatic potential at any point throughout the volume of the conductor is always constant and the value of the potential at the surface of the conductor is equal to that at any point inside the volume of the conductor.

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